Sir David Attenborough's encounter with mountain gorillas during the filming of Life On Earth (1978) is one of the greatest moments in television history. In this journey of re-discovery, Sir David recounts his very personal experiences with the mountain gorillas of Rwanda.

Eyes from around the globe have been focused on the vibrant country of Brazil throughout the 2014 FIFA World Cup. But away from the bright stadium lights and passionate football fans is a different side of Brazil, but with just as much action. This brand new documentary series Wild Brazil brings some of the country's most iconic species to the screens in a fresh and exciting way, showcasing never-before-filmed behaviour, and giving amazing insights into their personalities and relationships.

This intimate journey into the heart of Brazil concludes. A fierce drought ensues, culminating in huge and ferocious fires. The capuchin monkeys, giant otters, coatis and jaguars are proving their extreme survival skills while looking for mates and racing to breed to ensure that the next generation are born just as the good times arrive again.

Tides govern marine life. Tidal marshes are some of the most productive parts of the world. Numerous plants support numerous animals, yet life is not easy; predators are attracted to these enormous quantities of food, forcing animals to seek constant protection from attack. Relief comes with the crashing waves, as the tides flow once more. Between the tides, when the sands become depleted of food and air, the worms, clams and shrimps just endure the expected pause.